Patent US4174183A successfully refreshed from Google Patents.
US4174183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support frame
Assignee: SELF LEVEL COVERS AG
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Filing: 1978-03-01
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Granted: 1979-11-13
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Expires: 1998-03-01
Abstract
Abstract A support frame for a man-hole cover or similar article of highway furniture has a vertical wall portion with an outwardly extending flange at one end. Support means for the cover on the inside of the flange is so arranged that the frame can be mounted either with the flange at the upper end of the wall or with the flange at the lower end of the wall, the top of the cover being level with the top of the frame in both cases. When the frame is mounted with the flange at the upper end, the frame is "self-levelling".
Inventors
- 👤 Derek Ferns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:20
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/12; E02D29/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
120 words
A method of positioning a frame in a paved surface for supporting an article of highway or carriageway furniture, said frame having an outwardly extending flange the upper surface of which is to coincide with the level of the finished surface, said method comprising the steps of placing the frame in a position below said level of the finished paved surface, holding the frame in said position utilising temporary support means, laying the surface material, and applying pressure to the newly applied surface so that newly laid road material is forced under the outwardly extending flange of the frame, whereby the frame is supported on this material by said flange and lifted to said level of the finished paved surface.
Claim 2
Independent Claim
120 words
A method of positioning a frame in a paved surface for supporting an article of highway or carriageway furniture, said frame having an outwardly extending flange the upper surface of which is to coincide with the level of the finished surface, said method comprising the steps of placing the frame in a position below said level of the finished paved surface, holding the frame in said position utilising temporary support means, laying the surface material, and applying pressure to the newly applied surface so that newly laid road material is forced under the outwardly extending flange of the frame, whereby the frame is supported on this material by said flange and lifted to said level of the finished paved surface.
Claim 3
Dependent Claim
18 words
A method according to claim 1, wherein a roller is used for pressure to the newly applied surface.
Claim 4
Dependent Claim
95 words
A frame for supporting a member at the level of a paved surface, the frame being constituted by a wall portion surrounding an aperture whose cross-section matches that of the member to be supported, an outwardly extending flange projecting from one edge of the wall portion, and internally extending support means adapted to support said member with its top surface substantially level with said one edge of the wall portion when said one edge is uppermost and with the opposite edge of the wall portion to said one edge when said opposite edge is uppermost.
Claim 5
Dependent Claim
95 words
A frame for supporting a member at the level of a paved surface, the frame being constituted by a wall portion surrounding an aperture whose cross-section matches that of the member to be supported, an outwardly extending flange projecting from one edge of the wall portion, and internally extending support means adapted to support said member with its top surface substantially level with said one edge of the wall portion when said one edge is uppermost and with the opposite edge of the wall portion to said one edge when said opposite edge is uppermost.
Claim 6
Dependent Claim
73 words
A frame according to claim 3, wherein said internal support means comprises a plurality of recesses extending from one edge of the wall portion to the other, each recess having tapering surfaces disposed perpendicular to the surface of the wall portion adjacent said recess so that the part of the recess intermediate the edges of the wall portion is narrower than the parts of the recess adjacent either edge of the wall portion.
Claim 7
Dependent Claim
28 words
A frame according to claim 3, wherein said internal support means comprises a projection extending around the entire inwardly facing side of the wall portion of the frame.
Claim 8
Dependent Claim
18 words
A frame according to claim 3, wherein the outwardly extending flange lies substantially at right-angles to the structure.
Claim 9
Dependent Claim
15 words
A frame according to claim 3, wherein the frame is made of spheroidal graphite iron.
References Cited (Backward Citations)
US1517871A
Cited
GB201018A
Cited
GB263262A
Cited
US1852928A
Cited
GB374697A
Cited
US2056362A
Cited
US2163221A
Cited
US3218942A
Cited
US3326100A
Cited
US3331295A
Cited
SE384238B
Cited
US4015373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-12 | 1983-05-14 | 1983-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-12 | 1987-05-14 | 1987-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-12 | 1991-05-14 | 1991-11-13 | $7700.00 | Window Closed / Lapsed |